<!doctype html>
<html lang="en-US">
  <head>
    <title>Web Chat: Programmatic access to post activity</title>
    <meta name="viewport" content="width=device-width, initial-scale=1.0" />
    <!--
      For simplicity and code clarity, we are using Babel and React from unpkg.com.
    -->
    <script crossorigin="anonymous" src="https://unpkg.com/@babel/standalone@7.8.7/babel.min.js"></script>
    <script crossorigin="anonymous" src="https://unpkg.com/react@16.8.6/umd/react.development.js"></script>
    <script crossorigin="anonymous" src="https://unpkg.com/react-dom@16.8.6/umd/react-dom.development.js"></script>
    <!--
      This CDN points to the latest official release of Web Chat. If you need to test against Web Chat's latest bits, please refer to using Web Chat's latest bits:
      https://github.com/microsoft/BotFramework-WebChat#how-to-test-with-web-chats-latest-bits
    -->
    <script crossorigin="anonymous" src="https://cdn.botframework.com/botframework-webchat/latest/webchat.js"></script>

    <style>
      html,
      body {
        height: 100%;
      }

      body {
        margin: 0;
      }

      #webchat {
        box-shadow: 0 0 10px rgba(0, 0, 0, 0.05);
        height: 100%;
        margin: auto;
        max-width: 480px;
        min-width: 360px;
      }

      .app__help-button {
        left: 10px;
        position: absolute;
        top: 10px;
      }
    </style>
  </head>
  <body>
    <div id="webchat" role="main"></div>
    <script type="text/babel" data-presets="env,stage-3,react">
      (async function () {
        const {
          React: { useCallback, useEffect },
          WebChat: {
            Components: { BasicWebChat, Composer },
            createDirectLine,
            hooks: { useFocus, useSendMessage }
          }
        } = window;

        // In this demo, we are using Direct Line token from MockBot.
        // Your client code must provide either a secret or a token to talk to your bot.
        // Tokens are more secure. To learn about the differences between secrets and tokens
        // and to understand the risks associated with using secrets, visit https://docs.microsoft.com/en-us/azure/bot-service/rest-api/bot-framework-rest-direct-line-3-0-authentication?view=azure-bot-service-4.0

        const res = await fetch(
          'https://hawo-mockbot4-token-app.blueriver-ce85e8f0.westus.azurecontainerapps.io/api/token/directline',
          { method: 'POST' }
        );
        const { token } = await res.json();
        const directLine = createDirectLine({ token });

        // Since the <SendHelpMessageButton> component uses the useSendMessage hook it must be a descendant of <Composer>.
        const SendHelpMessageButton = () => {
          const sendMessage = useSendMessage();

          const handleHelpButtonClick = useCallback(() => sendMessage('help'), [sendMessage]);

          return (
            <button className="app__help-button" onClick={handleHelpButtonClick} type="button">
              Send "help" to the bot
            </button>
          );
        };

        ReactDOM.render(
          <Composer directLine={directLine}>
            <BasicWebChat />
            <SendHelpMessageButton />
          </Composer>,
          document.getElementById('webchat')
        );
      })().catch(err => console.error(err));
    </script>
  </body>
</html>
